Total Output Power (RMS) 21W + 21W Driver Units 4" (Mid-range and bass) + 0.5" (Treble) Frequency Response 51Hz – 20kHz Signal-to-Noise Rate ≥ 85dB(A) Audio Inputs Bluetooth, Line In, Optical, Coaxial lnput Sensitivity LINE In 1 R/L: 500 ± 50mV LINE In 2 R/L: 600 ± 50mV Optical / Coaxial R/L: 350 ± 50mFFS Bluetooth R/L:700 ± 50mFFS Dimensions (W x H x Dmm) 146mm * 234mm * 196mm Net Weight 4.9kg